Joining members, joint structure between columns and beams

Abstract

To provide a joint member and the like, which are available even if difference in height of beams is small when joining the beams having different heights to a square steel pipe column.SOLUTION: A joint member 3 is a substantially rectangle annular member having four faces corresponding to lateral faces of a column and has substantially regular square shape in plan view. The joint member 3 is constituted by joining and integrating a plurality of split pieces 5a, 5b. A projection 11 is formed at substantially central part in a height direction on the split piece 5a. The projection 11 is formed across whole length in a longer direction on one end side (lower end) in the height direction on the split piece 5b. Therefore, the projection 11 is formed at different heights on the split piece 5a and the split piece 5b.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a joining member and the like for joining beams of different heights to a square steel pipe column.

Background Art

[0002] Conventionally, in a structure using a square steel pipe column, there are cases where a beam made of H-shaped steel is joined. When joining the column and the beam, it is necessary to efficiently transmit the stress from the beam to the column at the joint. For this purpose, it is necessary to form a through diaphragm corresponding to the height of the flange portion of the beam. The through diaphragm is a plate-like member joined by welding or the like between columns. When using a through diaphragm, the flange portion of the beam is abutted against the side surface of the through diaphragm and welded.

[0003] However, the sizes (heights) of the beams joined to the column may not be the same in all directions. For example, there are cases where only beams in one direction and beams with a low height are joined. In such a case, at least one of the upper and lower flange portions of the beam cannot be joined to the through diaphragm to which other beams are joined.

[0004] As a column-beam joint structure for joining beams of different heights, when there is a step in the flanges of the left and right beams, a plurality of diaphragms are provided at the positions of the respective flanges, and a method of joining the beams by non-scallop welding without providing a scallop (welding notch) at the end of the beam to obtain a structure excellent in mechanical properties such as deformation performance is disclosed (Patent Document 1).

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, as described in Patent Document 1, the process of installing an internal diaphragm inside the column has the problem of requiring a large amount of welding and being difficult to work with. In addition, the structure described in Patent Document 1 requires the column-beam joint to be integrally molded, which increases the mass of the metal fittings and makes it expensive.

[0007] Furthermore, joining the inner diaphragm to the column requires working space for welding. However, if the heights of the beams to be joined are different, and the difference is small, the inner diaphragm and the through diaphragm will be close together, making it impossible to secure sufficient space for welding. In such cases, the inner diaphragm cannot be joined.

[0008] This invention has been made in view of the above problems, and aims to provide a joining member, etc., that can accommodate even when the difference in beam heights is small when joining beams of different heights to a square steel pipe column. [Means for solving the problem]

[0009] To achieve the aforementioned objective, the first invention is a beam joining member to a column, which is a substantially rectangular annular member having four faces corresponding to the side surface of the column, and is provided with projections that protrude outward on at least two faces to which the flange portion of the beam is joined, and the height positions at which the projections are formed on at least two faces are different. Multiple segmented pieces are joined together to form a single unit, and on at least two surfaces, the protruding portion of one segmented piece and the side end surface of the other segmented piece adjacent to it are exposed, and the outer surface of the protruding portion and the side end surface are formed in substantially the same plane. This is a joining member characterized by the following features.

[0011] The four divided pieces may be joined together to form a single unit.

[0013] At least one surface does not need to have the aforementioned protrusion formed thereon.

[0014] The second invention is a beam joining member to a column, which is a substantially rectangular annular member having four faces corresponding to the sides of the column, and having projections on at least two faces that project outward and to which the flange portion of the beam is joined, the height positions at which the projections are formed on at least two faces are different, and the projections are not formed on at least one face. Two elongated segmented pieces are positioned opposite each other, and two flat segmented pieces are positioned between the elongated segmented pieces and joined together to form a single unit. The elongated segmented pieces have protrusions on their outer surfaces, while the flat segmented pieces do not have protrusions. A joining member characterized by .

[0015] The third invention is a beam joining member to a column, which is a substantially rectangular annular member having four faces corresponding to the side surface of the column, and is provided with projections that protrude outward on at least two faces to which the flange portion of the beam is joined, and the height positions where the projections are formed on at least two faces are different. On the surface where the protrusion is formed, a groove into which the web of the beam is inserted is formed in a direction perpendicular to the direction in which the protrusion is formed. A joining member characterized by the following: .

[0016] 1 -3 According to this invention, in a substantially rectangular annular member, protrusions are formed on at least two surfaces (two directions) to which the flanges of beams are joined, and by changing the height position where the protrusions are located depending on the direction, beams of different sizes can be joined.

[0017] Furthermore, if the joining member is formed by joining and integrating multiple segmented pieces, a wide variety of variations can be accommodated by combining a minimum number of segmented pieces.

[0018] In particular, if the four divided pieces are joined together to form a single unit, the beam's connection position can be changed for each of the four faces (four directions).

[0019] If the outer surface of the protruding portion and the side end surface of the adjacent segmented piece are formed on substantially the same plane, the beam can be joined along the entire length of the joining member.

[0020] Alternatively, two elongated segmented pieces positioned opposite each other may be combined, in which case two flat segmented pieces may be joined between the elongated segmented pieces. By doing so, ordinary plate-shaped members can be used for the direction in which the beam is not joined, thereby reducing costs.

[0021] In this way, by not forming a protrusion on at least one surface, and instead providing a protrusion only in the direction in which the beams are joined, material costs can be reduced.

[0022] Furthermore, by forming a groove on the surface where the protrusion is formed, perpendicular to the direction in which the protrusion is formed, into which the web of the beam is inserted, the alignment of the beam and the connecting member is facilitated.

[0023] No. 4 The invention of No. -3 is a column-beam joint structure using the joint member according to the invention of No. 1, wherein the joint member is joined to the column, beams having different heights are arranged on different surfaces of the joint member, and the upper and / or lower flange portions of the beam are joined to the protruding portion.

[0024] No. 4 According to the invention of No.

Advantages of the Invention

[0025] According to the present invention, when joining beams having different heights to a square steel pipe column, it is possible to provide a joint member or the like that can cope even when the difference in the heights of the beams is small.

Brief Description of the Drawings

[0026] [Figure 1] Perspective view showing the column-beam joint structure 1. [Figure 2] Perspective view showing the joint member 3. [Figure 3] (a) is a perspective view showing the split piece 5a, and (b) is a perspective view showing the split piece 5b. [Figure 4] (a) and (b) are views showing the joint structure of the joint member 3 and the beams 7a and 7b when viewed from different directions. [Figure 5] (a) and (b) are views showing other forms of the protruding portion 11. [Figure 6] Perspective view showing the joint member 3a. [Figure 7] View showing the joint structure of the joint member 3a and the beam 7b. [Figure 8] Perspective view showing the joint member 3b. [Figure 9] (a) is a perspective view showing the joint member 3c, and (b) is a perspective view showing the joint member 3d. [Figure 10](a) is a perspective view showing the joining member 3e, and (b) is a perspective view showing the joining member 3f. [Figure 11] A perspective view showing the joining member 3g. [Figure 12] A perspective view showing the joint member 3h. [Figure 13] A perspective view showing column-beam joint structure 1a. [Modes for carrying out the invention]

[0027] The following describes a column-beam joint structure 1 according to an embodiment of the present invention. Figure 1 is a perspective view showing the column-beam joint structure 1. The column-beam joint structure 1 is a structure in which a plurality of beams 7a and 7b are joined to the side surface of a column 6.

[0028] Column 6 is a hollow rectangular steel pipe column, and beams 7a and 7b are H-shaped steel beams. Beams 7a and 7b have different heights. In the example in Figure 1, beam 7a is formed in one direction of column 6, and beams 7b are formed in the other three adjacent directions, but this is not limited to this, and beams 7a may be provided in multiple directions.

[0029] A diaphragm 9 is joined to the column 6. The diaphragm 9 is a through diaphragm that protrudes outward from the column 6. A connecting member 3 is provided at a predetermined distance from the column 6 to the diaphragm 9. The dimensions of the connecting member 3 and the diaphragm 9 in plan view are approximately the same. That is, the amount of protrusion of the diaphragm 9 and the connecting member 3 relative to the side surface of the column 6 is approximately the same. In the illustrated example, the diaphragm 9 is provided above and the connecting member 3 is provided below, but this may be reversed, or instead of the diaphragm 9, a pair of connecting members 3 may be arranged vertically at a predetermined distance apart.

[0030] The ends of the upper and lower flanges of beam 7a are joined to the diaphragm 9 and the connecting member 3 by welding, respectively. Similarly, the ends of the upper and lower flanges of beam 7b are joined to the diaphragm 9 and the connecting member 3 by welding, respectively. In other words, the diaphragm 9 and the connecting member 3 become the members that connect beams 7a and 7b to column 6.

[0031] Figure 2 is a perspective view of the joining member 3, Figure 3(a) is a perspective view showing the segmented piece 5a, and Figure 3(b) is a perspective view showing the segmented piece 5b. The joining member 3 is a substantially rectangular annular member having four faces corresponding to the sides of the column, and has a substantially square outer shape in plan view. The joining member 3 is constructed by joining and integrating multiple segmented pieces 5a and 5b. In the illustrated example, four plate-shaped segmented pieces 5a and 5b are joined and integrated. Since the segmented pieces 5a and 5b are joined by welding, grooves for welding may be formed on the outer or inner surface, for example.

[0032] As shown in Figure 3(a), a portion of the inner surface of the divided piece 5a (the surface opposite to the surface on which the protrusion 11 is formed) has a curved surface corresponding to the curved shape of the corner of the column 6, and a protrusion 11 that projects outward is formed on the outer surface. The protrusion 11 is formed along the entire length in the longitudinal direction. Here, A in the figure is the height direction and B in the figure is the thickness direction. That is, the protrusion 11 is the part that is thicker than other parts. Also, in the divided piece 5a, the protrusion 11 is formed approximately in the center in the height direction.

[0033] As shown in Figure 3(b), like segment 5a, segment 5b also has a curved portion on its inner surface that corresponds to the curved shape of the corner of column 6, and a projection 11 that protrudes outward on its outer surface. In segment 5b, the projection 11 is formed along the entire length in the longitudinal direction at one end (lower end) in the height direction. In other words, segment 5a and segment 5b differ in the height at which the projection 11 is formed (the height position of the center of the projection 11 in the height direction).

[0034] As shown in Figure 2, by combining four segments 5a and 5b of approximately the same length, a roughly rectangular annular member is formed. In this case, the side end face 17 of one side of the segments 5a and 5b in the longitudinal direction (the side on which a curved surface is formed on the inner surface) is exposed so as to protrude onto the side of the protruding portion 11 of the adjacent segments 5a and 5b that are joined to that side. The side end face of the other side of the segments 5a and 5b in the longitudinal direction (the side on which a curved surface is not formed on the inner surface) is abutted against the protruding position of the adjacent segments 5a and 5b that are joined to that other side. In other words, the outer surface of each side of the joining member 3 is composed of the outer surface of the segments 5a and 5b placed on that surface and a part of the adjacent segments 5a and 5b (side end face 17).

[0035] Furthermore, the upper and lower surfaces of the connecting member 3 become the column joint 13 to which the column 6 is joined. In this case, a curved shape corresponding to the shape of the column 6 is formed on the inner surface of the connecting member 3, so that the thickness of the column 6 and the thickness of each divided piece 5a, 5b (thickness excluding the protruding portion 11) can be made close. The protruding portion 11 is positioned facing outward and becomes a beam joint 15 to which either beam 7a or beam 7b is joined.

[0036] Figure 4(a) shows the joint structure between the column and beam as viewed from the beam 7b side, and Figure 4(b) shows the joint structure between the column and beam as viewed from the beam 7a side. As mentioned above, beams 7a and 7b are H-shaped steels consisting of a pair of flange portions 19 and a web portion 21 that connects the flange portions 19 together.

[0037] The upper flange portions 19 of beams 7a and 7b are joined to the diaphragm 9 by welding. The lower flange portions 19 of beams 7a and 7b are joined to the connecting member 3 by welding. In other words, the distance between the diaphragm 9 and the protruding portion 11 of the connecting member 3 corresponds to the distance between the flange portions 19 of beams 7a and 7b in each direction (side) of the column 6.

[0038] As mentioned above, the height at which the protruding portion 11 is formed differs between the divided piece 5a and the divided piece 5b. Furthermore, the protruding portion 11 is the joint portion of the flange portion 19 of the beams 7a and 7b. In other words, the height at which the flange portion 19 is joined differs depending on the direction in which the divided piece 5a is positioned and the direction in which the divided piece 5b is positioned. For this reason, in the direction in which the divided piece 5a is positioned, the distance between the diaphragm 9 and the protruding portion 11 of the joining member 3 is relatively narrow, and the lower beam 7a is joined. Conversely, in the direction in which the divided piece 5b is positioned, the distance between the diaphragm 9 and the protruding portion 11 of the joining member 3 is relatively wide, and the higher beam 7a is joined. Thus, in the column-beam joint structure 1, beams 7a and 7b of different heights are positioned on different faces of the joining member 3, and the upper and / or lower flange portions 19 of beams 7a and 7b are joined to the protruding portion 11.

[0039] As shown in Figure 2, when the divided pieces 5a and 5b are combined, on the surface where the protrusion 11 is formed, the protrusion 11 of one divided piece 5a or 5b and the side end surface 17 of the other divided piece 5a or 5b adjacent to it are exposed, and the outer surface of the protrusion 11 and the side end surface 17 are formed on substantially the same plane. That is, no large step is formed between the protrusion 11 and the side end surface 17, and the beam joint 15 is formed to span the protrusion 11 and the side end surface 17. Therefore, the flange portions 19 of the beams 7a and 7b can be joined along substantially the entire length of the joining member 3. As a result, stress from the beams 7a and 7b can be reliably transmitted to the column 6.

[0040] Here, the height difference in which the protrusions 11 are formed in the divided pieces 5a and 5b is, for example, 100 mm or less, and may be even 50 mm or less. Thus, this embodiment is particularly effective when it is difficult to install an internal diaphragm, such as when the height difference between beams 7a and 7b is 100 mm or less, and even 50 mm or less.

[0041] The cross-sectional shape of the protrusion 11 does not have to be approximately rectangular. For example, as shown in Figure 5(a), it may be a trapezoidal shape such that the length of the protrusion 11 in the height direction (direction A in the figure) decreases in an approximately linear fashion as it approaches the tip side (right side in the figure) in the thickness direction (B in the figure). Alternatively, as shown in Figure 5(b), the length of the protrusion 11 in the height direction (direction A in the figure) may decrease in a curved fashion as it approaches the tip side (B in the figure). In other words, the protrusion 11 may have a shape in which the width gradually changes from the tip to the base. The shape of the protrusion 11 may be the same for the divided pieces 5a and 5b, or it may be different.

[0042] As described above, according to this embodiment, beams 7a and 7b of different heights can be joined to the column 6, and stress from beams 7a and 7b can be efficiently transmitted to the column 6. Furthermore, it can be applied even when the height difference between beams 7a and 7b is small, such as when an internal diaphragm cannot be installed.

[0043] Furthermore, since the joining member 3 is formed by combining and joining different divided pieces 5a and 5b, it is only necessary to select the divided pieces 5a and 5b to be used according to the arrangement of beams 7a and 7b in relation to the direction of each column 6, and thus it can be applied to many variations with a small number of parts. In the embodiment described above, two types of divided pieces 5a and 5b were combined, but three or more types of divided pieces with different heights of the protruding portion 11 may also be combined.

[0044] Furthermore, since the outer surface of the protruding portion 11 and the side end surfaces 17 of the adjacent divided pieces 5a and 5b are formed on the same plane, the entire length of the side of the joining member 3 can be used as the beam joint portion 15.

[0045] Next, a second embodiment will be described. Figure 6 is a perspective view showing the joining member 3a according to the second embodiment. In the following description, components that perform the same functions as those in the first embodiment will be denoted by the same reference numerals as in Figures 1 to 5, and redundant explanations will be omitted.

[0046] The joining member 3a is substantially the same as the joining member 3, but differs in that it uses divided pieces 5c and 5d. Divided pieces 5c and 5d differ in that grooves 23 are formed on them relative to divided pieces 5a and 5b. The grooves 23 are formed approximately in the center of each side when viewed in plan of the joining member 3a. Furthermore, the grooves 23 are formed over the entire height of the portion excluding the protruding portion 11. That is, the grooves 23 are formed on the surface where the protruding portion 11 is formed, in a direction perpendicular to the direction in which the protruding portion 11 is formed.

[0047] Figure 7 is a cross-sectional view showing the state in which the beam 7b is joined to the joining member 3a. As mentioned above, the flange portion 19 is joined to the protruding portion 11. At this time, the web portion 21 is inserted into the groove 23 on the outer surface of the joining member 3a. In this way, by making the web portion 21 protrude from the flange portion 19 at the end of the beam to be joined and inserting it into the groove 23 on the outer surface of the joining member 3a, the positioning of the beam is made easy. In this case, the column joint portion 13 is located inside the groove 23 on the upper and lower surfaces of the joining member 3a.

[0048] According to the second embodiment, the same effects as the first embodiment can be obtained. Furthermore, by providing grooves 23 and inserting the web portions 21 of beams 7a and 7b into grooves 23, the positioning of beams 7a and 7b becomes easier.

[0049] Next, a third embodiment will be described. Figure 8 is a perspective view showing a joint member 3b according to the third embodiment. The joint member 3b is substantially the same as the joint member 3, but differs in that it uses divided pieces 5e and 5f. Compared to divided pieces 5a and 5b, the divided pieces 5e and 5f do not have a curved surface formed on their inner surface that corresponds to the inner surface shape of the column 6, and are formed with the same cross-section in the longitudinal direction.

[0050] If the corners of the column 6 do not have a curved shape or the radius is small, it is not necessary to form an inner surface shape corresponding to the shape of the column 6, as is the case with the joint member 3b. Although it is necessary to increase the wall thickness slightly, since it is formed with the same cross-sectional shape, for example, a long extruded material can be cut to a predetermined length to form the divided pieces 5e and 5f. For this reason, it is also possible to form joint members 3b of multiple sizes from the same material.

[0051] Furthermore, since the segmented piece 5f has a projection 11 formed on one end in the height direction, by reversing its orientation, the projection 11 can be positioned on either the lower or upper end. Therefore, when combining two types of segmented pieces 5e and 5f, the projection 11 can be formed at three different height positions. The joining member 3b can also be composed only of segmented pieces 5f of the same shape. In this case, in each direction of the joining member 3b, the orientation of the segmented piece 5f in at least one direction can be reversed relative to the other directions.

[0052] According to the third embodiment, the same effects as the first embodiment can be obtained. Furthermore, since the cross-sectional shape of the divided pieces 5e and 5f is constant in the longitudinal direction, the divided pieces 5e and 5f can be obtained simply by using a long extruded material as the raw material and cutting it to a predetermined length. In addition, since the position where the protrusion 11 is formed on the divided piece 5f is not the center in the height direction, the height position of the protrusion 11 can be changed by using it upside down.

[0053] Next, a fourth embodiment will be described. Figure 9(a) is a perspective view showing the joining member 3c according to the fourth embodiment. The joining member 3c is substantially the same as the joining member 3, but differs in that it uses divided pieces 5g and 5h.

[0054] In the aforementioned embodiments, the joining member was formed by combining four plate-shaped segments to create a roughly rectangular annular joining member. However, the joining member 3c is formed by combining two L-shaped segments 5g and 5h. Each segment 5g and 5h has a relatively longer long side and a relatively shorter short side. The length of the long side of segments 5g and 5h is approximately equal to the length of the side of the joining member 3d, and the long side alone constitutes one side of the joining member 3c. The other side of the joining member 3d is formed by the length of the short side and the thickness (side end face 17) of the adjacent segments 5g and 5h.

[0055] Similar to segment 5a, segment 5g has a projection 11 formed approximately in the center in the height direction. Similarly, segment 5h has a projection 11 formed on one end in the height direction, similar to segment 5b. Therefore, when segment 5g and 5h are combined, the heights of adjacent pairs of projections 11 are the same, while the heights of adjacent pairs of projections 11 differ from the heights of other adjacent pairs of projections 11.

[0056] As shown in Figure 9(b), one type of segmented piece 5i may be combined. The segmented piece 5i is roughly L-shaped, with a projection 11 on one side (long side) formed approximately in the center in the height direction, and a projection 11 on the other side (short side) formed at one end in the height direction. The arrangement of the projections 11 may be reversed between the long side and the short side. In the joining member 3d, the heights of opposing pairs of projections 11 are the same, while the height of this opposing pair of projections 11 differs from the height of another pair of projections 11 facing in a direction perpendicular to it.

[0057] According to the fourth embodiment, the same effects as the first embodiment can be obtained. Furthermore, since the divided pieces 5g, 5h, and 5i are roughly L-shaped, the number of members to be joined can be reduced.

[0058] Next, a fifth embodiment will be described. Figure 10(a) is a perspective view showing a joining member 3e according to the fifth embodiment. The joining member 3e is substantially the same as the joining member 3, but differs in that it uses a divided piece 5j. The divided piece 5j is a substantially U-shaped member, and a substantially rectangular joining member 3e is constructed by joining them so that their end faces abut each other.

[0059] Each divided piece 5j has opposing short sides and a long side connecting the two short sides. In the divided piece 5j, the projection 11 on the long side is formed approximately in the center in the height direction, and the projection 11 on the short side is formed at one end in the height direction. Alternatively, a divided piece 5k may be used in which the projection 11 on the long side is formed at one end in the height direction, and the projection 11 on the short side is formed approximately in the center in the height direction, as shown in the joining member 3f in Figure 10(b). In this case, one of the divided pieces 5k can also be used upside down.

[0060] According to the fifth embodiment, the same effects as the first embodiment can be obtained. Furthermore, since the divided pieces 5j and 5k are roughly U-shaped, the number of members to be joined can be reduced.

[0061] Next, a sixth embodiment will be described. Figure 11 is a perspective view showing a joining member 3g according to the sixth embodiment. The joining member 3g is composed of divided pieces 5l and 5m. Divided piece 5l is longer than divided piece 5m, and divided piece 5l alone constitutes one side of the joining member 3g. Divided piece 5m is sandwiched between divided pieces 5l from both sides, and the thickness of the divided pieces 5l on both sides, along with divided piece 5m, constitutes one side of the joining member 3g.

[0062] In the illustrated example, the protruding portion 11 of the segmented piece 5l is formed approximately in the center in the height direction, and the protruding portion 11 of the segmented piece 5m is formed on one end in the height direction, but the opposite may also be true. Since the segmented pieces 5l and 5m have a constant cross-sectional shape in the longitudinal direction, they can be manufactured by cutting a long extruded material, similar to the joining member 3b described above.

[0063] According to the sixth embodiment, the same effects as the third embodiment can be obtained. Thus, the way in which the divided pieces are combined is not particularly limited, and divided pieces 5l and 5m of different lengths may be combined.

[0064] Next, a seventh embodiment will be described. Figure 12 is a perspective view showing a joining member 3h according to the seventh embodiment. The joining member 3h has substantially the same configuration as the joining member 3, etc., but differs in that it is composed of divided pieces 5n, 5o, and 5p. Similar to the joining member 3g, long divided pieces 5n and 5p and a short divided piece 5o are combined, and the divided piece 5o is sandwiched between two opposing long divided pieces 5n and 5p to join and integrate them.

[0065] A projection 11 is formed on the outer periphery of the divided piece 5n approximately in the center in the height direction. A projection 11 is formed on one end of the outer periphery of the divided piece 5p in the height direction. Since the divided pieces 5n and 5p are arranged to face each other, the joining member 3h has projections 11 of different heights formed on a pair of opposing sides. On the other hand, the divided piece 5o is a flat plate-shaped member on which no projections 11 are formed. That is, the joining member 3h does not have projections 11 formed on a pair of opposing sides that are perpendicular to the direction in which the projections 11 are formed.

[0066] Figure 13 shows a column-beam joint structure 1a using a connecting member 3h. As described above, a diaphragm 9 is joined to the column 6 at a predetermined position, and the connecting member 3h is positioned below the diaphragm 9 at a predetermined interval. In the column-beam joint structure 1a, a pair of beams 7a and 7b are joined to the column 6 in directions opposite to each other, and no beams are joined in directions perpendicular to this. In such cases, it is not necessary to form a protrusion 11 in the direction in which the beams are not joined.

[0067] According to the seventh embodiment, the same effects as the first embodiment can be obtained. Furthermore, the protrusion 11 only needs to be formed in the direction in which the beams are joined. That is, the joining member has protrusions 11 that project outward on at least two surfaces, and the height positions at which the protrusions 11 are formed on at least two surfaces are different. Thus, the protrusion 11 does not need to be formed on at least one surface.

[0068] Although embodiments of the present invention have been described above with reference to the attached drawings, the technical scope of the present invention is not limited to the embodiments described above. It is clear to those skilled in the art that various modifications or alterations can be conceived within the scope of the technical idea described in the claims, and these will naturally also fall within the technical scope of the present invention.

[0069] For example, it goes without saying that the configurations in each of the embodiments described above can be combined with each other. Also, although the joining member is constructed by combining multiple divided pieces, it may be manufactured as a single piece. Furthermore, the surface opposite to the surface where the protrusion 11 is formed, and other parts other than the column joint 13, may be thinned. Also, although the example shown shows all the columns 6 to be joined being the same size, for example, the size of the columns joined above and below the joining member or diaphragm 9 may be varied.

[0070] Furthermore, the length of the protrusion 11 in the height direction (length in direction A in Figure 3) may be increased for each segmented piece so that the flange portion 19 can be joined to different height positions with a single protrusion 11. Alternatively, multiple protrusions 11 may be arranged at different height positions for a single segmented piece. [Explanation of symbols]

[0071] 1, 1a... Column-beam joint structure 3, 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h……Joining member 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h, 5i, 5j, 5k, 5l, 5m, 5n, 5o, 5p……split piece 6... Pillar 7a, 7b... Beams 9... Diaphragm 11……Protrusion 13……Column joint 15……Beam joint 17……Side end surface 19…Flange section 21...Web Department 23……groove

Claims

1. A connecting member for a beam to a column, It is a roughly rectangular annular member having four faces corresponding to the sides of the column, It has protrusions that project outward on at least two sides, to which the flange portion of the beam is joined, The height positions at which the protrusions are formed on at least two surfaces are different. Multiple segmented pieces are joined together to form a single unit. A joining member characterized in that, on at least two surfaces, the protruding portion of one of the divided pieces and the side end surface of the other divided piece adjacent to it on one side are exposed, and the outer surface of the protruding portion and the side end surface are formed substantially on the same plane.

2. The joining member according to claim 1, characterized in that the four divided pieces are joined together to form a single unit.

3. The joining member according to claim 1 or 2, characterized in that the protrusion is not formed on at least one surface.

4. A connecting member for a beam to a column, It is a roughly rectangular annular member having four faces corresponding to the sides of the column, It has protrusions that project outward on at least two sides, to which the flange portion of the beam is joined, The height positions at which the protrusions are formed on at least two surfaces are different. At least one surface does not have the aforementioned protrusion formed on it. Two elongated segmented pieces positioned opposite each other, and two flat segmented pieces positioned between the elongated segmented pieces, are joined together to form a single unit. A joining member characterized in that the protrusion is formed on the outer circumferential surface of the long segmented piece, and the protrusion is not formed on the flat segmented piece.

5. A connecting member for a beam to a column, It is a roughly rectangular annular member having four faces corresponding to the sides of the column, It has protrusions that project outward on at least two sides, to which the flange portion of the beam is joined, The height positions at which the protrusions are formed on at least two surfaces are different. A joining member characterized in that a groove is formed on the surface where the protrusion is formed, in a direction perpendicular to the direction in which the protrusion is formed, into which the web of the beam is inserted.

6. The joining member according to claim 5, characterized in that multiple divided pieces are joined together to form a single unit.

7. The joining member according to claim 5 or 6, characterized in that the protrusion is not formed on at least one surface.

8. A joint structure between a column and a beam using a joint member according to any one of claims 1 to 7, A column-beam joint structure characterized in that the jointing member is joined to the column, beams of different heights are arranged on different faces of the jointing member, and the upper and / or lower flange portions of the beams are joined to the protruding portion.

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